u/Bulky_Cover9723

Hello everyone,

I am reviewing NFPA 13R and 24 and and noted that the standards basically say when installing UG for 13R less than 4inch it is acceptable to use the plumbing code over NFPA 24. In these instances, is it still required to have a thrust block or method of restraint + 200 PSI hydro? Based out of CA. Thanks!